Interchangeable tool-holder ferrule



A. McCALLUM. INTEHCHANGEABLE TOOL HOLDER FERRULE.

. APPLICATION FILED DEC-12,1918. IAOZGGS.

Patented Feb. 211, 1922;

lNVENTOR. A

[Z tMQ/L i By 4 M ATTORNEY.

ALEXANDER MOCALLUM, 0F MENOMINEE, M IIICHIGAN.

INTERCHANGEABLE TOOL-HOLDER FERR'ULE.

Specification of Letters Patent. yatgntedl Feb, 211, 192% Applicationfiled December 12, 191 Serial at. 266,462.

To all whom it may concern:

7 Be it known that I, ALEXANDER MOCAL+ LUM, a subject of Canada,residing at Menominee, in the county .of Menominee and State ofMichigan, (whose post-ofiice address is 1809 State Road, Menominee,Michigan,) have invented certain new and useful Improvements inInterchangeable Tool- Holder Ferrules, of which the following is aspecification.

My invention relates to improvements more particularly ininterchangeable tool holder ferrules which are secured to, in mostcases,long slender wood handles, and the object of my improvements is,primarily, to construct a combined tool holder and ferrule. which shallbe adapted to receive and hold securely hoes, rakes, or other tools. Andanother object is, toconstruct these ferrule tool holders ,so that thedesired tool may be readily detachably secured thereto so that any othertool desired 'maybe,

quickly exchanged for the one therein. And, another object is, toconstruct tools, or a set of tools, which shall be each adaptable to thesaid holder.v Therefore, inasmuch as only one handle, with its combinedferrule'and tool holder attached, is necessary, notwithstanding thenumber of tools that may be required, it is obvious, that as a result ofmy improvements, there will, most necessarily, be a great saving of woodhandles and, also, a great saving to the purchaser of the articles. Andtoo, it will be seen, that the storagespace will be greatly reduced, andalso, the tools/may be packed for shipment in comparatively smallpackage lots, and the handles for each respective lot,. or set, may beshipped in separate lots in a. place where it would be more conven ientto store them.

These and other objects of my improvements will be more clearly pointedout in the. accompanying drawings, specification and appended'claim.

In the accompanying drawings Figure 1, -shown partly in section andpartly infull, is a side view of my'invention showing the improvementstherein.

. ure 1, but disclosing Figure 2, is a view si 'lar to that ofFigiflerent mechanism for obtaining the same results as secured by themechanism illustrated in Figure 1.

' Figure 3, is still another kind of mocha,

- to avoid any nism for obtaining the same results as secured by themechanism shown in Figure 1.

Figure 4, is a modified construction of the mechanism disclosed inFigure 3, and obtainsthe same result as that sought in the mechanism,shown in Figure 1.

Similar characters refer to similar parts throughout the several views.1

O In Figures 1 and 2 is shown the side view of a tool, A, in thisinstance a rake, with its shank, B, inserted in the socket, or bore, C,of the ferrule, or tool-holder, D, which is secured over the end of ahandle, E. On the ferrule, 0r tool-holder, D, is built a boss, D, inwhich a clamping screw, A and A is inserted. The object of the screw is,to force the conical portion, or shoulder, B, of the tool, A, into andagainst the conical portion, C, of the bore, C, and rigidly hold saidtool thereagainst so tightly that the tool can notbecome loosened whenbeing used. On the conical portion of the tool is provided a lug, B",which fits into a slot, D". The/object of this lug is twofold. Itprevents any tendency of the tool to twist and possibly cause theclamping screw to become loose; and it also acts as a means whereby thetool can be inserted to receive the screw without much trouble to theoperator.

It will be noted that the screws, A, and A are not of the sameconstruction. As will be seen in Figure 1, the screw, A, acts endwiseagainst the bottom of a recess, B, in the shank, B, while in Figure 2,the screw, A", acts as a wedge against the wall of a conical bore, BB,made in the shank, B,

instead of the recess, B'. It will also be noted that an ordinary 11;"2Othumb screw, designed as shown, will'be amply sufficient to clamp andhold. the tool rigidly and securely in place against the most abusiveuse the tool may be put to.

The thumb screws fit, in their respective places, comparatively loose inorder to ellminate, as much as ossible, the possibilit elf the threadsbecoming" rusted together. as much of'thecontacting surface against thetwo members, (the tool and the ferrule) has been eliminated, consistentwith strength possibility of they too becoming rusted together;

In Figures 3 and 4, it will be seen that.

the general construction difiers materially -which, being near the smallend of the ferrule, F, is inclined to receive against it, the end of thescrew, A. When the screw, A, is forced against said side F, it draws theconical part, G, of the tool, A, upon the ferrule, F, and holds itfirmly and securely in place.

In Figure 4, it will be seen that the ferrule, H, is so made that itreceives over it the straight portion, K, of the tool, A. This straightportion or straight socket, K, has also a boss, K, built onto it toreceive the clamping screw, A. And the ferrule, H, which receives thesocket, K, has two straight portions, K which slidaby fit the straightbore, K", of the socket, I and at the end of the ferrule, H, are twoconical surfaces, H, and H. H", receiving the clamping screw, A, againstit, and H-, receiving the conical bottom, KK, of the bore, K, there-'against. A square hole, KKK, is made in the bottom of the socket, K, toreceive the square projection, 11, which ison the end of the ferrule, H.The function performed by these square portions is identical with thatmentioned for, B, and D. In the socket, K, are made slots,'L, to makethe part materially lighter, yet, without afi'ecting the strengththereof.

Although I'have referred more particularly to garden tools, I do notcare to limit myself to that kind of tool, for, for instance, squeegeesand'other tools for various purposes may be made adaptable to the heroinmentioned ferrule tool holder.

Having thus described my invention, the merits of my improvements can bereadily understood, and it will be seen that the minor details of myconstruction may be altered in many ways without departing from thespirit of my invention, and what I claim and desire to secure by LettersPatent 1s Claim: In an interchangeable tool holder ferrule, incombination with a handle and a hollow shank end tool, a handlereceiving socket formed in one end of the ferrule, and, its opposite andformed into a square portion; two oppositely inclined conical shouldersformed inwardly from the end of the square end portion of the ferrule,the inner shoulder thereof adapted to receive a. tool securingthumb-screw thereon; a hollow shank-end tool having a conical bore, and,a square socket formed in the bottom of said bore, and each adapted toreceive therein the router conical shoulder and square portion of thetool holder ferrule; and a tool securing means diagonally mounted in thehollow shank-end of the tool. I

ALEXANDER MoCALLUM.

Witnesses:

JOHN E. Jonas, J oHN BAr'ris'rn GALoUR.

